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Hi Guys, My LASER diode dot module arrived from China yesterday, for those not familiar with my project I am modulating audio into PWM and then driving a LASER with the PWM signal, having a photodiode some distance away receive the light and demodulate it. I don't know a great deal about my...

Hi All, Ive built and tested Ron Jones's LASER pointer communication system and I must say it works quite well, the audio quality at the output is very good. However I was hoping someone could explain how the audio amplifier within the receiver actually works? The signal being fed into the...

Hi All, I have been working on this project for a few months, it basically a Pulse width modulation LASER comms system constructed around a triangle wave oscillator, microphone input w/ amplification, comparator and LASER. I've got the oscillator and mic and comparator running fine, can't...